Current water-wheel



2 Sheets-Sheet 1.

A. NYGREN. Current Water Wheel.

Patented April 26,4881.

(N 0 Model.)

(No Model.)

I 2Sheets-Sheet'2..

A NYGRENQ vCurrent Water Wheel. I No. 240,753. PatentedApril 26,1881.

22 I g 3 "B H I ll ll c F q. a '17 I I U Witnessex:

N.PETERS. PHOTo-LITHOGAPHER, WASHINGTOIL D12.

UNIT D STATES PATENT OFFICE.

AUGUST NYGREN, OF SAUNDERS, NEBRASKA.

CURRENT WATER-'WH EEL.

SPECIFICATION forming part of Letters Patent No. 240,753, dated April 26, 1881. Application filed April 19, 1880. (No model.)

To all whom it may concern:

Be it known that I, AUGUST NYeRErno Saunders P. 0., in the county of Saunders and State of Nebraska, have invcn ted certain new and useful Improvements in Current Water-Wheels and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, whichform a part of this specification, and in which Figure 1 is a plan view. Fig. 2 is a longitudinal sectional view. Fig. 3 is a vertical cross-section and Fig. 4 is a perspective view, illustrating a modification of my invention.

Corresponding parts in the several figures are denoted by like letters of reference.

This invention relates to that class of watermotors which are operated by the current; and it consists in certain improvements in the construction of the same, which will be hereinafterfull y described, and particularly pointed out in the claim.

In the drawings hereto annexed, A A represent suitable uprights arranged upon the piece E, and forming,together with the end pieces, F F, bearings for two sets of shafts, H H. The said shafts are provided with spiral blades or screws, arranged or coiled upon the opposite and adjoining sets in opposite directions, so as to receive the greatest possible force of the water, which is, so to speak, thrown from one set upon or against the other. The edges of the spiral blades are bent in aforward direction against the curfetit'T The inner adjoining ends of the shafts H H are provided with bevel-wheels I, engaging pinions J upon a shaft,..K,arranged transversely in frame 0. From shaft K the power is transmitted in any desired manner to the place where it is to be utilized. i

Instead of being arranged transversely in or across th e stream, the frame 0 may be hinged to suita uprights upon one side of the stream;"'a"s' shown in Fig. 4 of the drawings. In this ease'the lower ends of the frame are provided with bearin gs for the shafts having the screws or spirals, but in all important particulars theco'nstruction is unchanged.

From the foregoing description, taken in connection with the drawings hereto annexed, the operation and advantages of my invention will be readily understood.

The frame 0 may be easily raised or lowered, thus keeping all the working parts out of water when not in operation.

I attach importance to the pivotal connection between the frame O E D and the bars B, and to the same connection of the said bars B with the standards A. This construction allows the entire working parts to be elevated out of the water, when not in use, without disturbing the connection between such working or motive mechanism and the service'connections.

I also attach importance to the reverselyarranged screw-shafts, having arbitrary gearconnections with the communicating shaft K, in contradistinetion to friction-connections, which I am aware have been used in similar arrangements, as the latter are liable to slip their frictional contact.

Having thus described my invention, 1 claim and desire to secure by Letters Patent of the United States The frame D 0, having cross-piece E pivoted to the arms B, and the standards A,to which said arms B are pivoted, as shown, in combination with the reversely-arranged spiral shafts H H, having bevel-gears I, the pinions J, shaft AUGUST NYGREN.

Witnesses:

New J. ANDERSON, JOHN HULT. 

